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Temptrol Cap Assembly for Symmons T-12A

Bright brass bonnet nut with set screw.

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“The vacuum breaker on my outdoor spigot failed and Noel's Plumbing was the only placeI could find that had the appropriate mfr. part. I sent a text with photos on Wednesday evening to make sure the part I found was correct. In less than 2 hours later, I had a reply confirming it was the correct part. Placed my order that evening and received the part on Saturday afternoon (about 2.75 days) and my plumbing issue was resolved! I highly recommend - I really appreciated the prompt and pleasant response. ”
-Kimberly S.
04/25/2026

$60.47

 

The Symmons TA-12A (also referred to as the T-12A) is a Symmons replacement cap assembly designed for use with the Symmons Temptrol series of shower and tub/shower valves. It is a key component for maintenance and repair of the valve, particularly for resolving leakage problems.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

SKU: 17883 Category: Tag:

Temptrol Cap Assembly for Symmons 

 

T-12A

 

  • The TA-12A cap assembly is known as the “heart of the Temptrol system” along with the TA-10 spindle.
  • Constructed of durable, solid brass and other metals for longevity.
  • 1/2 in. I.D. x 1 in. O.D.
  • Limit stop and O-ring included

 

Customer submitted images. 

 

Common questions about this product

Is this the correct item for my application? chevron-icon

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

 

We will make sure you have the right part.

 

 

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM part. 

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02/08/2026
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